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W. R. SMITH Amin 15 1924.

SPRING STRUCTURE VOrigilal Filed Junel8 1921 @Honing reame ai; is, rezawaist wensen' n. s. i

STG STEUCTU F JACKSON, HECEIGAN.

Applition filed June le, 1931, Serial Noi'. newed February al, 1924.1.

rTo all 'whom t may concem':

-Be it known that l, Arson R. SMITH, a

Y' citizen 4of the United States, residing at l tures.

`0ne object is to provide a sheet metal base frame composed oi a sheetmetal strip having a downwardly opening recess and upper and lower angesalong its inner side adapted to form an innerlongitudinal groove toreceive a spring structure element in which groove the element is heldby compression of one or both danges, the said recess being adapted toconfine or retain a wood vinsert or analogous material to which themarginal edge of the `'upholstering covering oit vthe structure may betacked along the bottom of the folded stri Alliother object of theinvention resides in the provision of a base trame having a recess whichopens through thelower lace ot the -iframe and in which suitable meansis confined and to which the upholstering covering muy be seeurcd, thetrame also having upper and lower dang'es along its inner side forming alongitudinal groove to receive one ot the. spring structure elements,the lower dange l ing in a lane lower than any other portion or the ameso as to sustain the weight of the spring structure and hold` the outeredge of the base frame away from the usual support on which thestructure is mounted and therehy prevent undue wear on the cover alongthe outer lower 'edge of the frame where the cover is turned inwardlyunder the frame9 i With the above and other objects in view, theinvention consists in the novel construction, combination and arranement of Varts hereinafter fully described, illustrated Y in theaccompanying drawings and pointed lto out in the claims hereto appended,it being understood that various changes in the form, proportion andminor details of construction, within the scopeof the claims, may heres'ortejl to without departing from the spirit or acriiicing'any olithe advanltaes of the invention. .t

a drawings in which lilre charactem ower face out the of referencedesignate corresponding parts in the several my Figure 1 is afragmentary inverted plan view of the invention.A

lli ure 2 is a transverse sectional view showlng the position ol thebase frame with relation to the support upon which the sprin structureis positioned.

' Re errin now 'more particularly to the accompanying drawin s, thereference character A indicates the' ase frame, the character 3indicating border springsy connected to the trames.

n 'lhe essential feature of the present in-. I

vention goes to the base trame B which is composed preferably .of sheet`metal in the form of a folded strip, the metal heing folded to form arelatively wide recess 6 in which a wood insert or other filler i isconfined, the recess having a longitudinal opening in its lower face,throughout its len th, to expose the material 7. 'lihe marglnal edge oithe skirt 8 ot the upholstering covering is turned under the outerrounded edge of the strip and over the said opening in the frame and maybe tacked to the wood insert or analogous material 7. rlhetacks forsecuring the upholstering tothe hase 'trame are indicated at 9 andlmaybe of such length that when driven throughA the covering and the woodor analogous material 7 they contact with the inner tace of the top ofthe metallic trame strip and become clinched to prevent accidentaldisconnection ot the tacks The inner side ot the sheet metal 'strip isfolded in such` a manner as to provide upper andlower danges l@ and ll,respectively, along the entire inner edge ol the base trame strip, theupper dange lying preferably in a glane s ightly below the llingmaterial 7 and also preferably slightl helow the longitudinal opening inthe un er tace oli the base `trarne strip so that the spring structureas a whole is support from the inner side of the base trame strip on thelower dange to hold the turned in marginaltedge of the upholsteredcovering ed of Athe support on which the structure is mounted andthereby prevent undue wear oit the covering at the. outer lower edge otthe base frame where it is o spaar structure, e ham frame whose bodyportion is composed of a strip of Wood and a strip of sheet metal foldedover the wood strip to completely conceal the latter save for a narrowpart along the under side thereof adjacent the inner side of the woodstrip, said metal strip, along the i `inner side of the said bodyportion being directed inwardly in reverse S-formation to provide aninwardly opening groove within the said body portion and whose lowerwall lies in a plane within the wood stri and lower than the plane ofthe under side of the wood strip so as to support the aforesaid baseframe from within the confines of the wood strip and thereby maintainthe aforesaidl exposed part of the wood strip on a level higher than thelower wall of said groove, springs having connection with said groove,and a covering for the structure having its mar inal ed e drawn downover and around un er the ower outer edge of the metal strip to concealthe latter, and means to secure the marginal edge of the covering tothe-exposed part ofthe wood strip.

2. In a Spring structure, a base frame whose body portion is composed ofa strip of wood and a strip of sheetmetal folded over the wood strip tocompletely conceal the latter save for a narrow part along the undersidethereof adjacent the inner side of the wood strip, Said metal stripalong the inner side of the said body portion being directed inwardly inreverse S-formation to provide an mwardly opening groove within memesthe said body portion and whose lower wall lies in a plane within the'wood strip and lower than the plane of the under side of the wood stripso as to support the aforesaid base frame from within `the confines ofthe wood strip and thereby maintain the aforesaid exposed part of thewood strip on a level higher than the lower wall of said groove, springshaving connection with said groove, a covering drawn under the bodyportion of the base frame, and tacks piercing the marginal edge of thecoverin and the wood strip adjacent said reverse -formation and upsetagainst the upper wall of said groove.

3. A base frame for spring structures composed of a body portionincluding a fibrous v the fibrous stri to maintain the fibrous stripelevated slight y above the horizontalplane of the lower wall of thegroove.

In testimonyY whereof I have hereunto set m hand.

y WTSN R. SMlTl-I.

